The ULTIMAT connectible self-healing cutting mat protects your work surface during rotary cutting, trimming, and measuring. This mat measures 12 x 18 in (31 x 46 cm) with an 11.5 x 17.5 in (29 x 45 cm) grid and is designed to connect to other ULTIMAT mats. A non-glare surface and durable multi-ply build support repeated cuts, and the portable size stores flat between projects Rotate the mat and use a sharp blade to support self-healing performance.